Navigation Hazards

noun A submerged or partly exposed ridge of sand in a river or along a shore

• The ship ran aground on a sandbank near the shore.
• We should avoid swimming near the sandbank, it can be dangerous.
• Let's chill on the sandbank and catch some rays.
• His financial decisions left him stranded on a sandbank of debt.

noun a long, narrow bank or shoal of sand in the sea or a river

• The ship ran aground on a sandbar near the shore.
• Be careful when swimming, there's a sandbar just a few feet out.
• Let's go chill on that sandbar over there.
• The disagreement created a sandbar between the two friends.

noun a large group of fish swimming together

• A shoal of fish was seen swimming near the coral reef.
• We spotted a big shoal of fish while snorkeling.
• Check out that massive shoal of fish over there!
• The crowd outside the concert venue resembled a shoal of fish moving in unison.